Display screen or portion thereof with zygosity icon



The FIGURE is a front view of a display screen or portion thereof with zygosity icon showing our new design.

The gray shaded areas form part of the claimed design. The outer broken line rectangle showing the display screen or portion thereof, and all other broken lines showing the graphical user interface are included for the purpose of illustrating portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with zygosity icon, as shown and described. 